//两种调试信息输出 alert函数和console控制台（客户端）输出

//定义数值变量类型
var  age = 23;
alert(age);

//字符类型变量
var question = "中国人\'中国地'";
alert(question);

//布尔类型变量
var is_admin = true;
console.log(is_admin);

//数组类型变量
var animals = Array();
animals[0] = "狗";
animals[1] = "猫";
animals[2] = "猪";
console.log(animals);

//关联数组
var product = Array();
product["name"] = "笔记本电脑";
product["price"] = 4500.0;
console.log(product["price"]);

//对象
var student = new Object();
student.name = "张三";
student.age = 19;
console.log(student);

//选择
var number = 5;
if (number >= 5 &&number<=10){
    console.log("输入数据符合要求!");
}

//while循环
var count = 1;
while (count<6){
    console.log(count);
    count++;
}

//for循环
for (var i=0;i<6;i++){
    console.log(i);
}

//函数
function square(num) {
    return num * num ;
}
console.log(square(20));

//匿名函数
var x = function (a,b) {
    return a + b;
}
console.log(x(1,2));

//匿名函数自执行
console.log("匿名函数自执行1：" + (function (a,b) {
    return a*b;
})(3,4));
console.log("匿名函数自执行2：" + (function (a,b) {
    return a-b;
}(19,2)));

//对象方法
var person= {
    name : "李四",
    age : 18

};

//增加方法
person.show = function () {
    console.log("姓名"+name+"年龄"+age);
}
person.show();

//访问对象采用for..int结构
for (var attr in person){
    console.log(typeof person[attr]);
}

//常见对象使用 jQuery
var person2 = {
    name :"王五",
    age : 19,
    success: function () {
        console.log("成功");
    }
}
person2 .success();